George Barton 
Angels of the Battlefield: A History of the Labors of the Catholic Sisterhoods in the Late Civil War. (Second Edition-Revised and Enlarged) [PDF ebook] 

The object of this volume is to present in as consecutive and comprehensive form as possible the history of the Catholic Sisterhoods in the late Civil War. Many books have been written on the work of other women in this war, but, aside from fugitive newspaper paragraphs, nothing has ever been published concerning the self-sacrificing labors of these Sisterhoods. Whatever may have been the cause of this neglect or indifference, it is evident that the time has arrived to fill this important gap in the literature of the war.